My Sterba prop came with a substantial bit of urethane (I think thats what it is) at the leading edge as protection. It is designed to be replaced if it wears too much.
As far as rain......I have flown in rain on a couple of occasions and the only wear has been the yellow paint stripes at the tips which were put on by the painter. I have not noticed any other wear on the prop, but then I do my best to stay out of the rain.
The only special maintenance I do for my prop is to check the bolt torques at each oil change.
251.5 hours so far.
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Bruce Sacks
RV-9 N659DB - Flying since 7/1/06
Hatz CB-1 - Fabric covering with Polyfiber.
Warner Robins, GA
A&P
APRS KJ4EFS
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